All you need to do is click on the link and log in with your google account.

Once you are logged in you will see an edit button for the map, click it.

Now on the map itself there will be 3 new icons displayed, click the one that looks like an upside down tear drop, this is a placemarker and you can use this to place where you are from on the map!

Once placed you can put in a title (your username) and a description (ive put in my real name and my website)
I reccomend using rich text to input your data so you can use the hyper link function to link straight to your website.

Once done, click save on the right hand side and then click done!

DS-10 Producers that I have seen live:
AuxPulse, Critical Strike, DS-10 Dominator